Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/net/ethernet/apple/bmac.c b/drivers/net/ethernet/apple/bmac.c
index 6a8e256..a58185b 100644
--- a/drivers/net/ethernet/apple/bmac.c
+++ b/drivers/net/ethernet/apple/bmac.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Network device driver for the BMAC ethernet controller on
  * Apple Powermacs.  Assumes it's under a DBDMA controller.
@@ -777,7 +778,7 @@
 
 		if (bp->tx_bufs[bp->tx_empty]) {
 			++dev->stats.tx_packets;
-			dev_kfree_skb_irq(bp->tx_bufs[bp->tx_empty]);
+			dev_consume_skb_irq(bp->tx_bufs[bp->tx_empty]);
 		}
 		bp->tx_bufs[bp->tx_empty] = NULL;
 		bp->tx_fullup = 0;
@@ -814,8 +815,8 @@
 static unsigned int
 crc416(unsigned int curval, unsigned short nxtval)
 {
-	register unsigned int counter, cur = curval, next = nxtval;
-	register int high_crc_set, low_data_set;
+	unsigned int counter, cur = curval, next = nxtval;
+	int high_crc_set, low_data_set;
 
 	/* Swap bytes */
 	next = ((next & 0x00FF) << 8) | (next >> 8);